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UMI Performance Suspension Lowering Kits AB8250-1

UMI Performance Suspension Lowering Kits AB8250-1

68-72 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 250 front spring rate, 1" rear drop

Part Number: UPI-AB8250-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB8250-2

68-72 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 250 front spring rate, 2" rear drop

Part Number: UPI-AB8250-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Stage 1 Handling Kits ABF401-0-B

Handling Kit, Factory Height, Stage 1- Black

Part Number: UPI-ABF401-0-B

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF450-2

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 450 front spring rate, 2" rear drop

Part Number: UPI-GBF450-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB4450-2

64-66 GM A-Body Shock/Spring Lowering Kit, Double Adj, Shocks 450 front spring rate, 2" rear drop

Part Number: UPI-AB4450-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF250-2

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 250 front spring rate, 2" rear drop

Part Number: UPI-GBF250-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF350-1

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 350 front spring rate, 1" rear drop

Part Number: UPI-GBF350-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB4450-1

64-66 GM A-Body Shock/Spring Lowering Kit, Double Adj, Shocks 450 front spring rate, 1" rear drop

Part Number: UPI-AB4450-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF250-1

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 250 front spring rate, 1" rear drop

Part Number: UPI-GBF250-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB4550-2

64-66 GM A-Body Shock/Spring Lowering Kit, Double Adj, Shocks 550 front spring rate, 2" rear drop

Part Number: UPI-AB4550-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Stage 1 Handling Kits ABF401-0-R

Handling Kit, Factory Height, Stage 1- Red

Part Number: UPI-ABF401-0-R

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB4350-1

64-66 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 350 front spring rate, 1" rear drop

Part Number: UPI-AB4350-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB4350-2

64-66 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 350 front spring rate, 2" rear drop

Part Number: UPI-AB4350-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB7550-1

1967 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 550 Front Spring rate, 1" rear drop

Part Number: UPI-AB7550-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Stage 1 Handling Kits GBF001-1-B

Suspension Handling Package, Stage 1, Black Powdercoated, 1 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF001-1-B

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Stage 1 Handling Kits GBF001-1-R

Suspension Handling Package, Stage 1, Red Powdercoated, 1 in. Drop, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: UPI-GBF001-1-R

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF450-1

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 450 front spring rate, 1" rear drop

Part Number: UPI-GBF450-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits GBF350-2

78-88 GM G-Body Shock/Spring Lowering Kit, Double Adj. Shocks 350 front spring rate, 2" rear drop

Part Number: UPI-GBF350-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Stage 1 Handling Kits ABF801-0-R

Handling Kit, Factory Height, Stage 1- Red

Part Number: UPI-ABF801-0-R

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB7250-1

1967 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 250 Front Spring rate, 1" rear drop

Part Number: UPI-AB7250-1

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

UMI Performance Suspension Lowering Kits AB7550-2

1967 GM A-Body Shock/Spring Lowering Kit, Double Adj. Shocks 550 Front Spring rate, 2" rear drop

Part Number: UPI-AB7550-2

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Classic Performance Engine Install Kits 6366LS1-FRK

Headers, Engine Swap, Long Tube, Steel, Silver Ceramic Coated, 3.00 in. Collectors, Motor Mounts, Chevy, GMC, Small Block LS, Kit

Part Number: CLP-6366LS1-FRK

Not Yet Reviewed

Estimated Ship Date: Dec 12, 2025 if ordered today

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Estimated Ship Date: Dec 12, 2025 if ordered today

Call to Order

PROMAXX Performance Stock Replacement Cylinder Heads for 2008-2010 F-250 SUPER DUTY, F-350 SUPER DUTY - *:FOR852N

Cylinder Head, Cast Iron, Assembled, Ford, Powerstroke, 6.4L, Each

Part Number: PMX-FOR852N

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

PROMAXX Performance Stock Replacement Cylinder Heads *:FOR850N

Cylinder Head, Cast Iron, Assembled, 18mm Dowels, Ford, Powerstroke, 6.0L, Each

Part Number: PMX-FOR850N

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads 9216S

Cylinder Heads, Project X, Aluminum, Assembled, 64cc Chamber, 215cc Intake Runner, Chevrolet, Small Block, Pair

Part Number: PMX-9216S

Not Yet Reviewed

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